App Version

v3.18.3

API Provider

Not Applicable / Other

Model Used

N/A

🔁 Steps to Reproduce

Create a .env.local file with

SUPABASE_ACCESS_TOKEN=<valid access token>

Add an MCP config like:

"supabase": {
    "command": "npx",
    "args": [
        "-y",
        "@supabase/mcp-server-supabase@latest",
        "--access-token",
        "${env:SUPABASE_ACCESS_TOKEN}"
    ],
    "alwaysAllow": []
}

💥 Outcome Summary

Expected result: the MCP server connects to Supabase using <valid access token> pulled from .env.local via variable substitution.

Actual result: the MCP server attempts to connect to Supabase using the literal string "${env:SUPABASE_ACCESS_TOKEN}" as the access token.

📄 Relevant Logs or Errors (Optional)